One thing you don't want to deal with is that much heat at your age, you've dealt with heat before but you were a tad younger. I find I don't deal with the hot or cold as well as I used to, just part of not being 21 anymore! Glad that HVAC is going to be working for you for a couple more years though, they cost a fortune to fix or replace!

The plants look nice and healthy, you're doing something right! Good luck with you class and writing. It's good to keep the old brain active!